# Explain the difference between a categorical variable and a quantitative variable.

2. Explain what is meant by the term distribution of a variable.
3. Determine the difference between a pie chart, a bar chart, and a histogram.
4. List different properties one can use when describing the shape of distribution.
5. Here are the exam scores of 10 students in a statistics class: 50 35 41 97 76 69 94 91 23 65. Create a stem plot for this data set. Use the tens digits as the stem.
6. Describe a time plot and explain when it is appropriate.
Part 2
1. Among persons aged 15 to 24 years in the United States, the leading causes of death and the number of deaths in 2011 were: accidents, 12,032; suicide, 4688; homicide, 4508; cancer, 1609; heart disease, 948; and congenital defect 429.a) Use Excel to make a bar graph to display this data.
b) Suppose that the number of deaths due to all other causes is 5,786. Use Excel to create a pie chart for this data set.
2. The sales manager at a certain company is trying to decide how much of the budget to allocate for sales personnel for the upcoming year. Typically, sales costs run about 15% of Sales. To help develop an estimate, the sales manager studies sales (in millions \$) during the past 2 years at company X, which are given in the table below.

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